Orbit Fit and Astrometric record for 486958

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 486958    
# Created Wed Dec 13 02:36:53 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting  110 observations of  110
# Arc:   2.33y
# First observation: 2014/06/26
#  Last observation: 2016/10/24
# Chi-squared of fit:    51.79 DOF:  214 RMS:  0.12
# Min/Max residuals:    -0.31    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.426269E-05  2.269850E-02 -5.395321E-07 -5.065040E-04  2.358592E-02 -6.944602E-04
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.142379  -79.448893    0.105647    0.037946   -1.012184  2456834.870018
# Heliocentric elements and errors
Epoch:              2456834.5000  =  2014/06/26
Mean Anomaly:          297.46707 +/-     0.000
Argument of Peri:      187.59637 +/-     0.000
Long of Asc Node:      159.00336 +/-     0.000
Inclination:             2.45131 +/-     0.000
Eccentricity:         0.03548991 +/-    0.0000
Semi-Major Axis:     44.08536552 +/-    0.0000
Time of Perihelion: 2475405.9751 +/-       0.0
Perihelion:          42.52077969 +/-    0.0000
Aphelion:            45.64995136 +/-    0.0000
Period (y)              292.7183 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            7.83844518 +/-    0.0000
Ecliptic Y          -42.66546225 +/-    0.0000
Ecliptic Z            1.58497695 +/-    0.0000
Ecliptic XDOT         0.00257080 +/-    0.0000
Ecliptic YDOT         0.00055567 +/-    0.0000
Ecliptic ZDOT        -0.00006164 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.40848797 +/-    0.0000
Geocenter to KBO     42.39820016 +/-    0.0000
# Hcoef: 11.01

The following table shows the complete astrometric record for 486958. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (486958) followed by the observatory code and reference code for the source of the astrometry.

2014 06  26.36924  18 45 10.671  -20 53 03.06  26.8R 486958    250  S~26fI      
2014 06  26.37539  18 45 10.636  -20 53 03.10  27.0R 486958    250  S~26fI      
2014 06  26.38153  18 45 10.595  -20 53 03.18  27.0R 486958    250  S~26fI      
2014 06  26.38768  18 45 10.557  -20 53 03.23  26.5R 486958    250  S~26fI      
2014 06  26.39382  18 45 10.521  -20 53 03.31  26.7R 486958    250  S~26fI      
2014 06  26.50197  18 45 10.019  -20 53 03.77  26.2R 486958    250  S~26fI      
2014 06  26.50812  18 45 09.983  -20 53 03.80  27.1R 486958    250  S~26fI      
2014 06  26.51426  18 45 09.943  -20 53 03.88  27.2R 486958    250  S~26fI      
2014 06  26.52041  18 45 09.905  -20 53 03.95  27.3R 486958    250  S~26fI      
2014 06  26.52656  18 45 09.870  -20 53 04.01  27.4R 486958    250  S~26fI      
2014 08  02.54538  18 42 15.467  -20 56 43.22  27.5R 486958    250  S~26fI      
2014 08  02.55152  18 42 15.433  -20 56 43.22  27.1R 486958    250  S~26fI      
2014 08  02.55767  18 42 15.402  -20 56 43.19  25.1R 486958    250  S~26fI      
2014 08  02.56381  18 42 15.373  -20 56 43.16  27.0R 486958    250  S~26fI      
2014 08  03.73983  18 42 10.581  -20 56 50.45  26.5R 486958    250  S~26fI      
2014 08  03.74598  18 42 10.547  -20 56 50.41  27.0R 486958    250  S~26fI      
2014 08  03.75212  18 42 10.517  -20 56 50.40  28.1R 486958    250  S~26fI      
2014 08  03.75827  18 42 10.499  -20 56 50.37  27.6R 486958    250  S~26fI      
2014 08  21.31900  18 41 08.704  -20 58 32.35  26.2R 486958    250  S~26fI      
2014 08  21.32514  18 41 08.680  -20 58 32.41  25.8R 486958    250  S~26fI      
2014 08  21.33129  18 41 08.655  -20 58 32.52  26.7R 486958    250  S~26fI      
2014 08  21.33744  18 41 08.627  -20 58 32.59  27.2R 486958    250  S~26fI      
2014 08  21.34358  18 41 08.606  -20 58 32.63  26.6R 486958    250  S~26fI      
2014 08  21.38535  18 41 08.512  -20 58 32.73  27.4R 486958    250  S~26fI      
2014 08  21.39150  18 41 08.486  -20 58 32.79  27.0R 486958    250  S~26fI      
2014 08  21.39764  18 41 08.462  -20 58 32.88  26.8R 486958    250  S~26fI      
2014 08  21.40379  18 41 08.436  -20 58 32.94  26.5R 486958    250  S~26fI      
2014 08  21.40994  18 41 08.412  -20 58 33.00  26.7R 486958    250  S~26fI      
2014 08  23.17695  18 41 03.420  -20 58 42.47  27.5R 486958    250  S~26fI      
2014 08  23.18310  18 41 03.397  -20 58 42.52  27.0R 486958    250  S~26fI      
2014 08  23.18924  18 41 03.373  -20 58 42.64  27.2R 486958    250  S~26fI      
2014 08  23.19539  18 41 03.350  -20 58 42.70  27.7R 486958    250  S~26fI      
2014 08  23.20153  18 41 03.324  -20 58 42.77  26.9R 486958    250  S~26fI      
2014 08  23.24332  18 41 03.236  -20 58 42.85  26.1R 486958    250  S~26fI      
2014 08  23.24946  18 41 03.213  -20 58 42.90  26.1R 486958    250  S~26fI      
2014 08  23.25561  18 41 03.189  -20 58 42.98  26.3R 486958    250  S~26fI      
2014 08  23.26175  18 41 03.163  -20 58 43.05  26.9R 486958    250  S~26fI      
2014 08  23.26790  18 41 03.140  -20 58 43.13  26.1R 486958    250  S~26fI      
2014 10  15.06699  18 40 43.948  -21 01 45.51  26.5R 486958    250  S~26fI      
2014 10  15.07313  18 40 43.955  -21 01 45.55  26.2R 486958    250  S~26fI      
2014 10  15.07928  18 40 43.962  -21 01 45.58  25.8R 486958    250  S~26fI      
2014 10  15.08542  18 40 43.966  -21 01 45.64  25.4R 486958    250  S~26fI      
2014 10  15.09157  18 40 43.977  -21 01 45.65  25.5R 486958    250  S~26fI      
2014 10  15.13334  18 40 44.093  -21 01 45.60  26.7R 486958    250  S~26fI      
2014 10  15.13949  18 40 44.100  -21 01 45.61  26.9R 486958    250  S~26fI      
2014 10  15.14563  18 40 44.107  -21 01 45.65  27.1R 486958    250  S~26fI      
2014 10  15.15178  18 40 44.113  -21 01 45.71  27.4R 486958    250  S~26fI      
2014 10  15.15792  18 40 44.121  -21 01 45.73  26.8R 486958    250  S~26fI      
2014 10  16.19482  18 40 46.483  -21 01 46.56  26.9R 486958    250  S~26fI      
2014 10  16.20097  18 40 46.508  -21 01 46.94  29.0R 486958    250  S~26fI      
2014 10  16.20711  18 40 46.497  -21 01 46.67  27.7R 486958    250  S~26fI      
2014 10  16.21326  18 40 46.506  -21 01 46.71  26.9R 486958    250  S~26fI      
2014 10  16.21941  18 40 46.513  -21 01 46.73  28.4R 486958    250  S~26fI      
2014 10  22.36438  18 41 02.502  -21 01 49.71  26.0R 486958    250  S~26fI      
2014 10  22.37053  18 41 02.513  -21 01 49.82  26.9R 486958    250  S~26fI      
2014 10  22.37667  18 41 02.524  -21 01 49.87  26.9R 486958    250  S~26fI      
2014 10  22.38282  18 41 02.533  -21 01 49.94  27.0R 486958    250  S~26fI      
2014 10  22.38897  18 41 02.545  -21 01 49.95  27.2R 486958    250  S~26fI      
2015 05  04.69178  18 54 04.856  -20 45 17.13  28.3R 486958    250  S~26fI      
2015 05  04.69791  18 54 04.834  -20 45 17.09  27.0R 486958    250  S~26fI      
2015 05  04.70403  18 54 04.815  -20 45 17.03  27.1R 486958    250  S~26fI      
2015 05  04.71015  18 54 04.796  -20 45 16.99  26.7R 486958    250  S~26fI      
2015 07  04.60444  18 50 04.474  -20 49 11.58  27.0R 486958    250  S~26fI      
2015 07  04.61057  18 50 04.437  -20 49 11.60  26.8R 486958    250  S~26fI      
2015 07  04.61670  18 50 04.399  -20 49 11.61  27.4R 486958    250  S~26fI      
2015 07  04.62284  18 50 04.360  -20 49 11.62  26.8R 486958    250  S~26fI      
2015 07  04.62897  18 50 04.324  -20 49 11.64  26.8R 486958    250  S~26fI      
2016 03  15.00829  18 59 12.343  -20 42 13.66  27.0R 486958    250  S~26fI      
2016 03  15.01440  18 59 12.355  -20 42 13.66  27.1R 486958    250  S~26fI      
2016 03  15.02051  18 59 12.363  -20 42 13.62  27.3R 486958    250  S~26fI      
2016 03  15.02662  18 59 12.373  -20 42 13.52  26.7R 486958    250  S~26fI      
2016 03  15.03273  18 59 12.386  -20 42 13.41  27.1R 486958    250  S~26fI      
2016 05  15.09107  18 59 07.565  -20 39 50.46  26.6R 486958    250  S~26fI      
2016 05  15.09718  18 59 07.541  -20 39 50.50  26.5R 486958    250  S~26fI      
2016 05  15.10329  18 59 07.518  -20 39 50.47  26.6R 486958    250  S~26fI      
2016 05  15.10940  18 59 07.491  -20 39 50.45  27.0R 486958    250  S~26fI      
2016 05  15.11551  18 59 07.468  -20 39 50.38  26.8R 486958    250  S~26fI      
2016 07  03.57750  18 55 39.511  -20 43 53.11  27.5R 486958    250  S~26fI      
2016 07  03.58339  18 55 39.474  -20 43 53.17  26.6R 486958    250  S~26fI      
2016 07  03.59587  18 55 39.400  -20 43 53.14  28.8R 486958    250  S~26fI      
2016 07  03.60205  18 55 39.361  -20 43 53.07  28.0R 486958    250  S~26fJ      
2016 07  03.64376  18 55 39.182  -20 43 53.57  27.4R 486958    250  S~26fJ      
2016 07  03.64965  18 55 39.142  -20 43 53.65  27.4R 486958    250  S~26fJ      
2016 07  03.65595  18 55 39.107  -20 43 53.67  27.3R 486958    250  S~26fJ      
2016 07  03.66214  18 55 39.070  -20 43 53.61  28.2R 486958    250  S~26fJ      
2016 07  03.66832  18 55 39.036  -20 43 53.48  28.4R 486958    250  S~26fJ      
2016 07  03.71002  18 55 38.855  -20 43 54.02  27.8R 486958    250  S~26fJ      
2016 07  03.71591  18 55 38.819  -20 43 54.09  28.4R 486958    250  S~26fJ      
2016 07  03.72222  18 55 38.780  -20 43 54.12  28.7R 486958    250  S~26fJ      
2016 07  03.72840  18 55 38.742  -20 43 54.05  27.9R 486958    250  S~26fJ      
2016 07  03.73458  18 55 38.708  -20 43 53.99  27.7R 486958    250  S~26fJ      
2016 07  03.77627  18 55 38.528  -20 43 54.50  28.0R 486958    250  S~26fJ      
2016 07  03.78216  18 55 38.493  -20 43 54.55  27.8R 486958    250  S~26fJ      
2016 07  03.78847  18 55 38.454  -20 43 54.53  28.1R 486958    250  S~26fJ      
2016 07  03.79465  18 55 38.413  -20 43 54.53  29.2R 486958    250  S~26fJ      
2016 07  03.80083  18 55 38.381  -20 43 54.45  28.2R 486958    250  S~26fJ      
2016 07  25.70106  18 53 53.037  -20 46 32.22  27.4R 486958    250  S~26fJ      
2016 07  25.70717  18 53 53.003  -20 46 32.26  27.1R 486958    250  S~26fJ      
2016 07  25.71328  18 53 52.967  -20 46 32.32  26.8R 486958    250  S~26fJ      
2016 07  25.71939  18 53 52.930  -20 46 32.37  27.3R 486958    250  S~26fJ      
2016 07  25.72550  18 53 52.897  -20 46 32.43  27.5R 486958    250  S~26fJ      
2016 10  21.20737  18 51 48.303  -20 53 07.58  28.3R 486958    250  S~26fJ      
2016 10  21.21348  18 51 48.318  -20 53 07.64  26.4R 486958    250  S~26fJ      
2016 10  21.22570  18 51 48.335  -20 53 07.52  26.8R 486958    250  S~26fJ      
2016 10  21.23181  18 51 48.345  -20 53 07.45  27.7R 486958    250  S~26fJ      
2016 10  24.25448  18 51 56.623  -20 53 06.39  26.3R 486958    250  S~26fJ      
2016 10  24.26059  18 51 56.630  -20 53 06.39  26.5R 486958    250  S~26fJ      
2016 10  24.26670  18 51 56.644  -20 53 06.31  26.5R 486958    250  S~26fJ      
2016 10  24.27281  18 51 56.654  -20 53 06.21  27.1R 486958    250  S~26fJ      
2016 10  24.27892  18 51 56.667  -20 53 06.16  26.2R 486958    250  S~26fJ      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00     0.12       0.00     0.03
  2   0.0000      0.00     0.19       0.00     0.05
  3   0.0000      0.00     0.03       0.00     0.01
  4   0.0001      0.00    -0.09       0.00    -0.01
  5   0.0001      0.00    -0.17       0.00    -0.06
  6   0.0004      0.00     0.27       0.00     0.06
  7   0.0004      0.00     0.18       0.00     0.06
  8   0.0004      0.00     0.04       0.00     0.02
  9   0.0004      0.00    -0.08       0.00    -0.02
 10   0.0004      0.00    -0.15       0.00    -0.05
 11   0.1018      0.00     0.12       0.00    -0.10
 12   0.1018      0.00    -0.01       0.00    -0.06
 13   0.1018      0.00    -0.10       0.00     0.00
 14   0.1018      0.00    -0.15       0.00     0.07
 15   0.1051      0.00     0.14       0.00    -0.10
 16   0.1051      0.00    -0.00       0.00    -0.02
 17   0.1051      0.00    -0.08       0.00     0.02
 18   0.1051      0.00     0.03       0.00     0.09
 19   0.1532      0.00     0.22       0.00     0.09
 20   0.1532      0.00     0.13       0.00     0.06
 21   0.1532      0.00     0.02       0.00    -0.01
 22   0.1532      0.00    -0.13       0.00    -0.05
 23   0.1532      0.00    -0.17       0.00    -0.05
 24   0.1534      0.00     0.24       0.00     0.07
 25   0.1534      0.00     0.12       0.00     0.05
 26   0.1534      0.00     0.03       0.00    -0.01
 27   0.1534      0.00    -0.10       0.00    -0.03
 28   0.1534      0.00    -0.19       0.00    -0.06
 29   0.1583      0.00     0.23       0.00     0.08
 30   0.1583      0.00     0.14       0.00     0.07
 31   0.1583      0.00     0.04       0.00    -0.02
 32   0.1583      0.00    -0.05       0.00    -0.05
 33   0.1583      0.00    -0.19       0.00    -0.09
 34   0.1585      0.00     0.23       0.00     0.06
 35   0.1585      0.00     0.14       0.00     0.04
 36   0.1585      0.00     0.03       0.00    -0.00
 37   0.1585      0.00    -0.10       0.00    -0.04
 38   0.1585      0.00    -0.19       0.00    -0.09
 39   0.3031      0.00     0.16       0.00     0.07
 40   0.3031      0.00     0.06       0.00     0.04
 41   0.3031      0.00    -0.04       0.00     0.01
 42   0.3031      0.00    -0.18       0.00    -0.04
 43   0.3031      0.00    -0.22       0.00    -0.04
 44   0.3033      0.00     0.15       0.00     0.05
 45   0.3033      0.00     0.05       0.00     0.04
 46   0.3033      0.00    -0.05       0.00     0.01
 47   0.3033      0.00    -0.16       0.00    -0.04
 48   0.3033      0.00    -0.24       0.00    -0.06
 49   0.3062      0.00     0.15       0.00     0.07
 50   0.3062      0.00     0.32       0.00    -0.31
 51   0.3062      0.00    -0.06       0.00    -0.03
 52   0.3062      0.00    -0.14       0.00    -0.07
 53   0.3062      0.00    -0.25       0.00    -0.08
 54   0.3231      0.00     0.19       0.00     0.11
 55   0.3231      0.00     0.09       0.00     0.00
 56   0.3231      0.00    -0.01       0.00    -0.04
 57   0.3231      0.00    -0.14       0.00    -0.11
 58   0.3231      0.00    -0.23       0.00    -0.12
 59   0.8551      0.00     0.14       0.00    -0.07
 60   0.8551      0.00     0.00       0.00    -0.03
 61   0.8551      0.00    -0.10       0.00     0.03
 62   0.8551      0.00    -0.19       0.00     0.08
 63   1.0219      0.00     0.27       0.00    -0.01
 64   1.0219      0.00     0.17       0.00     0.01
 65   1.0219      0.00     0.05       0.00     0.03
 66   1.0219      0.00    -0.08       0.00     0.06
 67   1.0219      0.00    -0.16       0.00     0.08
 68   1.7184      0.00     0.14       0.00    -0.09
 69   1.7184      0.00     0.06       0.00    -0.13
 70   1.7184      0.00    -0.08       0.00    -0.13
 71   1.7184      0.00    -0.19       0.00    -0.07
 72   1.7184      0.00    -0.26       0.00     0.00
 73   1.8856      0.00     0.22       0.00    -0.06
 74   1.8856      0.00     0.12       0.00    -0.09
 75   1.8857      0.00     0.04       0.00    -0.04
 76   1.8857      0.00    -0.11       0.00    -0.01
 77   1.8857      0.00    -0.19       0.00     0.07
 78   2.0211      0.00     0.25       0.00    -0.13
 79   2.0211      0.00     0.13       0.00    -0.15
 80   2.0212      0.00    -0.06       0.00    -0.03
 81   2.0212      0.00    -0.18       0.00     0.08
 82   2.0213      0.00     0.22       0.00    -0.13
 83   2.0213      0.00     0.05       0.00    -0.17
 84   2.0213      0.00    -0.00       0.00    -0.14
 85   2.0213      0.00    -0.10       0.00    -0.04
 86   2.0214      0.00    -0.15       0.00     0.13
 87   2.0215      0.00     0.22       0.00    -0.12
 88   2.0215      0.00     0.12       0.00    -0.15
 89   2.0215      0.00    -0.00       0.00    -0.14
 90   2.0215      0.00    -0.11       0.00    -0.02
 91   2.0215      0.00    -0.17       0.00     0.08
 92   2.0216      0.00     0.22       0.00    -0.14
 93   2.0217      0.00     0.13       0.00    -0.15
 94   2.0217      0.00     0.01       0.00    -0.09
 95   2.0217      0.00    -0.14       0.00    -0.05
 96   2.0217      0.00    -0.17       0.00     0.08
 97   2.0817      0.00     0.26       0.00     0.06
 98   2.0817      0.00     0.17       0.00     0.06
 99   2.0817      0.00     0.04       0.00     0.05
100   2.0817      0.00    -0.09       0.00     0.04
101   2.0817      0.00    -0.17       0.00     0.02
102   2.3213      0.00     0.06       0.00    -0.07
103   2.3213      0.00     0.05       0.00    -0.13
104   2.3213      0.00    -0.17       0.00    -0.01
105   2.3213      0.00    -0.26       0.00     0.06
106   2.3296      0.00     0.14       0.00    -0.12
107   2.3296      0.00    -0.02       0.00    -0.12
108   2.3296      0.00    -0.07       0.00    -0.05
109   2.3296      0.00    -0.18       0.00     0.05
110   2.3297      0.00    -0.25       0.00     0.10

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

486958    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.073    44.073    44.073
ecceobj         0.040     0.040     0.040
incobj          2.448     2.448     2.448
qmin           41.728    41.729    41.721
qmax           47.052    47.037    47.054
amean          44.287    44.286    44.287
amin           43.946    43.946    43.945
amax           44.645    44.645    44.643
emean           0.040     0.040     0.040
emin            0.025     0.024     0.025
emax            0.054     0.054     0.054
imean           2.521     2.521     2.521
imin            1.907     1.907     1.907
imax            3.103     3.104     3.103
excite_mean     0.060     0.060     0.060
fracstop        1.000     1.000     1.000
cjmean          3.101     3.101     3.101

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       177.9     177.6     177.8
kozaiamp        180.0     180.0     180.0